J081031 固体高分子形燃料電池触媒層の極薄液膜におけるナノスケール拡散に関する分子動力学的研究([J08103]燃料電池(3))

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Oxygen permeation through water liquid film has important role in reaction rate in the polymer electrolyte membrane fuel cell (PEFC). In the present study, molecular dynamics simulations have been performed to study a fundamental problem: How many vapor molecules colliding with the vapor-liquid interface penetrate through ultra-thin liquid film? We have investigated probabilities of penetration of argon vapor molecules through its ultra-thin liquid films in vapor-liquid equilibrium states at 85 K. As a result, these probabilities are 0.43 with a liquid film thickness of 1.85 nm and 0.36 with 7.56 nm. Almost all penetrating molecules through liquid films penetrate within 30 ns in the former, and 100 ns in the latter. Key Words :
一般社団法人日本機械学会の論文
2011-09-11